Jan 19 (Reuters) - Russian diamond miner Alrosa says:
* Extends period during which it will accept deposits on a tender for the sale of its natural gas assets until Jan. 29;
* Requirements for the provision of regulatory permits by bidders have also been relaxed;
* All other terms for the tender remain the same, including an auction starting price of 30 billion roubles ($531.22 million);
* Russia’s anti-monopoly watchdog said on Monday it had stopped processing a complaint from Rosneft over the sale after it was withdrawn by the oil major. ($1 = 56.4738 roubles) (Reporting by Moscow Newsroom)